/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
    * with the License.  You may obtain a copy of the License at
    *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  package org.apache.maven.model.path;
  
  import org.junit.Test;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertNull;
  
  /**
   * @author Benjamin Bentmann
   */
  public class DefaultUrlNormalizerTest {
  
      private UrlNormalizer normalizer = new DefaultUrlNormalizer();
  
      private String normalize(String url) {
          return normalizer.normalize(url);
      }
  
      @Test
      public void testNullSafe() {
          assertNull(normalize(null));
      }
  
      @Test
      public void testTrailingSlash() {
          assertEquals("", normalize(""));
          assertEquals("http://server.org/dir", normalize("http://server.org/dir"));
          assertEquals("http://server.org/dir/", normalize("http://server.org/dir/"));
      }
  
      @Test
      public void testRemovalOfParentRefs() {
          assertEquals("http://server.org/child", normalize("http://server.org/parent/../child"));
          assertEquals("http://server.org/child", normalize("http://server.org/grand/parent/../../child"));
  
          assertEquals("http://server.org//child", normalize("http://server.org/parent/..//child"));
          assertEquals("http://server.org/child", normalize("http://server.org/parent//../child"));
      }
  
      @Test
      public void testPreservationOfDoubleSlashes() {
          assertEquals("scm:hg:ssh://localhost//home/user", normalize("scm:hg:ssh://localhost//home/user"));
          assertEquals("file:////UNC/server", normalize("file:////UNC/server"));
          assertEquals(
                  "[fetch=]http://server.org/[push=]ssh://server.org/",
                  normalize("[fetch=]http://server.org/[push=]ssh://server.org/"));
      }
  
      @Test
      public void absolutePathTraversalPastRootIsOmitted() {
          assertEquals("/", normalize("/../"));
      }
  
      @Test
      public void parentDirectoryRemovedFromRelativeUriReference() {
          assertEquals("", normalize("a/../"));
      }
  
      @Test
      public void leadingParentDirectoryNotRemovedFromRelativeUriReference() {
          assertEquals("../", normalize("../"));
      }
  }